Dockerfile

FROM ruby:2.4
MAINTAINER Joao Serra <joaopfserra@gmail.com>

RUN apt-get update && \
    apt-get install -y --force-yes \
            curl \
            git \
            wget \
            libpq-dev && \
    apt-get autoremove -y --force-yes && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

ENV DOCKERIZE_VERSION v0.2.0
RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
    && tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz

RUN gem install bundler

ENV APP_HOME /sidekiq-cron
RUN mkdir $APP_HOME
WORKDIR $APP_HOME

ADD Gemfile* $APP_HOME/

ENV BUNDLE_GEMFILE=$APP_HOME/Gemfile \
  BUNDLE_JOBS=2 \
  BUNDLE_PATH=/bundle

RUN bundle install

ADD . $APP_HOME